This study focused on a quantitative study of the CO2 adsorption dynamic within the adsorbent particle. It could drive and improve ideal pore characteristics and the adsorption process efficiency. The parameters operating conditions for the CO2 adsorption process of zeolite 5A pellet were studied using Aspen Adsorption. The effects of compression force (200–400 MPa), compression time (5–15 min), and addition of bentonite binder (0–15% wt. of bentonite binder) for zeolite 5A pelletization and temperature for CO2 adsorption ranging from 298–373 K were studied. There was an error from the simulation of approximately 0.34–10.62% compared to the experimental results. The results showed that the interparticle voidage was reduced, and the appropriate mass transfer was required for good CO2 adsorption capacity. Reduction of interparticle voidage is achieved using a small compression force, a short compression duration, and a small bentonite binder, all of which significantly increase CO2 adsorption capacity. The mass transfer must be within the optimum range because it will decrease the contact time between the zeolite surface and the CO2 molecules. The CO2 adsorption increases with the gas phase temperature decrease. The result showed that the maximum CO2 adsorption by zeolite 5A was 7.078 mmol CO2/g with 0 wt% bentonite binder, 200 MPa, and 5 min at 298 K, 1 atm pressure.

This research investigated the effects of compression force, compression time, and addition of bentonite binder on zeolite 5A pelletization. Carbon dioxide (CO2) adsorption of zeolite 5A pellets was tested in a laboratory-scale packed-bed reactor at 298 K, atmospheric pressure and 2 l/h flow rate. Zeolite 5A pellets were prepared using a pelletization technique at 200-400 MPa compressive force, 5-15 min compression time, and with 0-15% wt. of bentonite binder. The specific surface area and density of zeolite 5A pellets increased with increase of compression force. Compression force led to increase in specific surface area and resulted in an agglomeration of zeolite pellets, making CO2 molecules more difficult to become active sorbent. The addition of bentonite into zeolite 5A pellets with more compression time resulted in the reduction of specific surface area. The compression force and mass fraction of the binder were found to offer significant control over CO2 adsorption capacity. No addition of binder, 200 MPa compression force and 5 min compression time resulted in a maximum CO2 adsorption capacity of 3.64 mmol CO2/g. This research indicated that zeolite 5A pellets have a beneficial effect and high potential as an adsorbent, especially in terms of CO2 adsorption and environmental applications